Make sure that current->thread.reg exists before we deference it in flush_hash_page.
Signed-off-by: Michael Neuling <[email protected]> Reported-by: John J Miller <[email protected]> Cc: <[email protected]> diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 3e4c4ed..88ac0ee 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1230,6 +1230,7 @@ void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, int ssize, * unmapping it first, it may see the speculated version. */ if (local && cpu_has_feature(CPU_FTR_TM) && + current->thread.regs && MSR_TM_ACTIVE(current->thread.regs->msr)) { tm_enable(); tm_abort(TM_CAUSE_TLBI); _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
